VA 550 - Thermal mass flow sensor for flow measurement

Name: VA 550 - Thermal mass flow sensor for flow measurement
Rating: 4.6 (75 reviews)

Flow meters for compressed air and other technical gases

Reduce your energy costs and increase your sustainability with the VA 550. Monitor your consumption and analyze your leakage flows with just one measuring device. Due to its design, it is also ideal for mobile measurements.

Advantages at a glance:

All wetted parts are made of stainless steel, especially for applications with high demands on cleanliness and surface quality
Rough industrial applications can be realized due to robust aluminum housing
Recommended for flammable gases such as natural gas, hydrogen, biogas, etc. due to ATEX or DVGW approval
Measurement of mass flow rate, direct output of standard volume flow rate
Highly accurate at small as well as large flows
Pressure and temperature compensated by the thermal mass flow principle
Quick and easy installation via a standard ½'' ball valve
No moving parts, therefore low maintenance
Vanishingly low pressure loss due to vanishingly low blockage of the diameter

Technical details of the VA 550 flow meter

04...20 mA, Pulse and a Modbus RTU (RS 485) interface as standard, optional interfaces like Modbus TCP (Ethernet), PoE and M-Bus available
Pressure resistance up to 100 bars
Temperature range up to 180°C
Protection class IP 67
Integrated display for a visualization of the measured values
Can be used from DN 20 to DN 2000, larger diameters on request
Easy installation under pressure
Settings adjustable via the keys of the display
Main counter reading can be reset via the display
For velocities up to 224 Nm/s
Highly accurate with an accuracy of ± 1.5% or ± 1% of m.v. as well as ± 0.3% of f.s.

DVGW approval and explosion protection with Ex or ATEX certificate

<p>Conventional flowmeters, which are firmly screwed via flanges, can only be installed or removed in a depressurized state. Especially with large pipe diameters, these devices are very heavy and expensive. The installation and removal is time-consuming. When deinstalled, they require a precisely fitting replacement piece to be able to close the line again. Recalibration is very complicated and difficult.</p>
<p>The VA 550 only requires a ball valve via which it can be hot tapped under pressure. The system does not have to be shut down. Due to the engraved depth scale, the VA 550 can be installed without any problems and with an exact fit.</p>
<p><strong>For hazardous areas as well as natural gas applications, the VA 550 is optionally available with an ATEX or DVGW approval. </strong></p>

<p>The VA 550 is available for lines from DN 20 to DN 2000. It can be ordered with different shaft lengths due to its modular design, making a single sensor compatible for a wide range of line diameters.</p>

<p>Due to its robust die-cast aluminum housing and a protection class of IP 67, the VA 550 is ideal for use in harsh industrial conditions. The VA 550 flow sensor is ideally suited for outdoor use, its sealed housing protects it against a wide range of weather conditions.</p>

<p>The robust stainless steel sensor tip is ideal for harsh industrial use. It is protected against mechanical damage during installation or removal. The sheathing around the thermal sensor element provides protection against dirt particles, rust or other mechanical abrasion of the compressed air lines. All wetted components are made of stainless steel, making the VA 550 an option for applications that have high surface finish requirements as well as cleanliness.</p>
<p>With a pressure tightness of up to 100 bar, the VA 550 is perfect for use at high pressure applications.</p>

<p>In most cases, the compressed air is not free of oil, condensate, dirt and particles. Over time, this leads to contamination of the sensor tips. As a result, measurement errors can occur to a certain extent, but this can also lead to total failure. Consumption meters currently on the market cannot usually be cleaned and are replaced when they become dirty.</p>
<p>The VA 550 can be cleaned on site quickly and without much effort by shaking it in water or a non-aggressive cleaning agent / alcohol.</p>

<p>With the pressure-tight drilling jig and aspot drilling collar, a measuring point can be set up quickly and safely under pressure. This allows consumption measurement to be carried out at any point in the compressed air network.</p>

<p>Unlike many conventional insertion sensors, which are fixed to the process with a safety rope or chain, the design of VA 550 prevents uncontrolled ejection during installation and removal.</p>

<p>By means of an alignment tool, the VA 550 consumption sensor can be placed quickly and easily at the correct angle to the flow. This is important to guarantee the measuring accuracy. The alignment tool is supplied as standard with every VA 550.</p>

<p>All necessary settings during initial installation can be set on site via the keypad. These include the selection of the unit, resetting the main counter, zero point adjustment or low flow cut off, reference conditions, etc.</p>

<p>If the installation situation does not allow the display of the VA 550 to be seen, it can be mechanically rotated by 345° on site. Furthermore, the display can be digitally rotated via the menu keys, e.g. if the sensor is installed upside down.</p>
<p>This means that the measured values can be viewed in any installation position.</p>

Data sheet

Instruction manual

Downloads

Overview - VAxx product line

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The CS Instruments product portfolio includes measuring devices for numerous applications in compressed air and gas measurement. Both small industrial companies and large OEM customers, for example from the automotive industry, rely on our reliable measuring instruments made in Germany and are fully supported by our worldwide dealer and partner network.

VA 550 - Thermal mass flow sensor for flow measurement

Flow meters for compressed air and other technical gases

Advantages at a glance:

Technical details of the VA 550 flow meter

VA 570 - Thermal mass flow meter for consumption measurement

VA 500 - Flow meter for compressed air and gases

VA 520 - Thermal mass flow meter for flow measurement

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VA 550 - Thermal mass flow sensor for flow measurement

Flow meters for compressed air and other technical gases

Advantages at a glance:

Technical details of the VA 550 flow meter

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VA 500 - Flow meter for compressed air and gases

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